Using the knife and tweezers, take out the feet (BE CAREFUL WITH THE KNIFE)

Then, take out the screws, using the PH0 screwdriver (there are only 3 screws under the feet)

Use the puck to open it a little (so the flat screw could fit)

Then, using the flat head, open that side (you will hear a click or multiple clicks when you will do it)

Repeat these steps until you will open up the hard drive

After opening it, you can proceed to disconnect the hard drive itself and discover the battery and the WiFi “stuff”